NAD+-dependent, homodimeric, phenylacetaldehyde dehydrogenase (PADH, EC=1.2.1.39) PadA of Escherichia coli involved in the catabolism of 2-phenylethylamine, and other related sequences, are present in this CD. Also included is the Pseudomonas fluorescens ST StyD PADH involved in styrene catabolism, the Sphingomonas sp. LB126 FldD protein involved in fluorene degradation, and the Novosphingobium aromaticivorans NahF salicylaldehyde dehydrogenase involved in the NAD+-dependent conversion of salicylaldehyde to salicylate.